Preview is a built-in Mac application that has many features that doesn’t get a lot of press. One of them is the ability to place a caption inside the body of the image. Another is to mark up images to remove confidential information. If you double click on an image outside of a photo editor like iPhoto or Aperture, it opens in Preview and can be edited.

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As pointed out byMacStories, Apple recently removed trials for the iWork suite and Aperture 3 from Apple.com. The webpage formerly home to the iWork trial now includes a message informing users that iWork apps, such as Keynote, Pages, and Numbers, are available through the Mac App Store.Apple removed the trial for a short while last year before returning it; however, the company also informed users last month that the iWork.com Beta service would shut down July 31. Apple does not currently offer trial versions of the $20 Mac Store apps.